Database Users

Red LED of Death

Not sure if anyone post it already.
After using the phone for 2 months, I've just experienced the red led issue.
The phone just shutdown suddenly with 4X% remaining when doing benchmark that charging with USB. It just turned off and followed by the red LED.
At that time, I thought I was fxxxed!
I tried to plug and unplug from the PC but no luck, it just popped out the "Google" logo and then the red LED lit up and repeat and repeat.
Then I plugged in the PC again and pressed power on + vol up, it allowed to go to bootloader but soon it shutdown, which means the hardware has't died.
This time I plugged it in the AC charger, the red LED started blinking.
Luckily, charging animation appeared and the phone can be turned on just charged for few minutes.
After turning on the phone, only 1% left.
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But I don't think It can drain the battery within a minute, so I decided to reboot the phone.
After reboot, I got 56% left.
Then, I got a conclusion that the red LED may be caused by the wrongly calibrated battery or overheat.
Sorry for my bad English

Or just a bad battery in general. Happened before on the htc phone I had.

Thanks for the screen shot.

http://forum.xda-developers.com/showthread.php?p=37565454
Sent from my Nexus 4 using xda premium
Here you go this has been talked about before many times. I had the same issue happen to me and posted just like you and got some more thread links to more people that has happened too.

its just that benchmarks pull a lot of current suddenly from the battery and it cant keep up (try turning on a crt monitor while powered from a 360W ups.. the ups will turn off)..
so once the voltage in the battery drops because of the load.. the phone thinks the battery is dead.. so once you give a little time to recover and charge it for a little while.. the voltage will stabilize and it will all be a ok

nok07635 said:
Not sure if anyone post it already.
After using the phone for 2 months, I've just experienced the red led issue.
The phone just shutdown suddenly with 4X% remaining when doing benchmark that charging with USB. It just turned off and followed by the red LED.
At that time, I thought I was fxxxed!
I tried to plug and unplug from the PC but no luck, it just popped out the "Google" logo and then the red LED lit up and repeat and repeat.
Then I plugged in the PC again and pressed power on + vol up, it allowed to go to bootloader but soon it shutdown, which means the hardware has't died.
This time I plugged it in the AC charger, the red LED started blinking.
Luckily, charging animation appeared and the phone can be turned on just charged for few minutes.
After turning on the phone, only 1% left.
View attachment 1740405View attachment 1740406
But I don't think It can drain the battery within a minute, so I decided to reboot the phone.
After reboot, I got 56% left.
View attachment 1740407View attachment 1740408
Then, I got a conclusion that the red LED may be caused by the wrongly calibrated battery or overheat.
Sorry for my bad English
Click to expand...
Click to collapse
There are multiple reasons for the red light. Mine got it while running antutu. Was totaly unresponsive, but could get into bootloader to fastboot the stock images back. No luck on that (still dead) so I had to RMA it

Just had this happen to me Friday night. The batterry went dead so I connected it to the charger and it turned on but then it rebooted and the red LED came on! :/

Techguy18 said:
its just that benchmarks pull a lot of current suddenly from the battery and it cant keep up (try turning on a crt monitor while powered from a 360W ups.. the ups will turn off)..
so once the voltage in the battery drops because of the load.. the phone thinks the battery is dead.. so once you give a little time to recover and charge it for a little while.. the voltage will stabilize and it will all be a ok
Click to expand...
Click to collapse
Happened to me on stock with the phone on the charger overnight. I couldn't even get into fastboot, but pulling the back off to reset the battery fixed it finally. It's such a common problem I halfway believe the LG-sourced batteries have an issue.
Sent from my Nexus 4 using Tapatalk 2

No Red LED of Death.........
Red Heinz Tomato Soup of Death
Yes - I did just drop my Nexus⁴ into 1cm deep bowl of Heinz Tomato Soup.
Thank God for my factory installed screen saver & the 1st case I've EVER owned (one of those gel style from eBay £2:69
$hit, I was worried for a moment
Sent from NEXUS⁴ via XDA app [AOKP_B6]​

Theres a fix for that. Open back cover, unscrew battery connector, disconnect it, and connect it again. And dont screw it. Put the back over on and try to turn on device.
Sent from SpeedMachine i9100

Hey this just happened to me my phone was showing fully charged and then just went black put it on charger and booted up. I'm in cm10 nightly with latest Franco kernal
Sent from my Nexus 7 using Tapatalk 2

This happened to me running the stock rooted ROM and Franco Kernel (Milestone)
The phone had died a few times, each time going to a red flashing light and would eventually power on. About a week ago, it happened again but the red light was solid and would not power on. The Red LED of Death.
I left it charging overnight for a few days and today managed to power it on. Before trying this jump-start method, I advise leaving it to charge for a very long time (several days). After around 12 hours it seems that the red light goes off. At this point I unplugged and plugged it back in, showing the red light again. I hope this helps someone else fix their phone.

Slow charging

Hello,
I've noticed my nexus is charging really slowly. When idle it goes really slow, when using it, the power is falling down..
Using the stock charger.
before this it was charging normaly
What hapened:
I was charging it and playing a game, then my roomate came and ripped it out of my hand thus bending the charging hole and snaping the cable connector. I bought a new cable and gently fixed the charging hole (micro usb slot) so now it is looking like it shoud...
could this be the reason? the conector might be damaged.

Now the tab has fully discharged.
It boots and shuts down.
Tried changing the cable, adabter no help.
The device is rooted, so I cant even unroot it and send it to the service.

AW: Slow charging
I have kind like the same problem:
My nexus is still charging, but it is really slow (~20hrs to charge fully) and the charge decreases if i use it while charging. I tried with another charger, but its no use. So it must be the connector or the battery. The issue started few days ago with now really reason ( except i am a poweruser). You could try to open the tablet, disconnect the battery for a few seconds and then try to revive it, or to change the battery. Another thing i noticed since the issue occured first is that i dont get a popup message when the power falls under 14% anymore, so may it be a software fail and the tablet is charging normally in truth?
Sent from my Nexus 7 using xda app-developers app

AW: Slow charging
Not sure whether this helps, but I once had it charge in USB mode, though it was on AC. When this happened I could hear the device make a buzzing sound. It was charging much slower then. There is a way to check the charging mode but I forgot how. May be part of Android Tuner or DaahClock widget's Battery plugin.

AW: Slow charging
You can download spare parts, in the APP you can see wether its charging via USB or AC. But i think this wont help, cause the app says AC, but it seems im charging with USB power only ( if i use the tablet, the power level decreases while charging). I dont even think the issue is caused by a broken connector, because my Problem seems to be the same, and without connected charger, the tablet discharges much faster than normal. So its more like a fast uncharging problem caused by a defective part like the battery or a cable.
Sent from my Nexus 7 using xda app-developers app

opreptetr said:
You can download spare parts, in the APP you can see wether its charging via USB or AC. But i think this wont help, cause the app says AC, but it seems im charging with USB power only ( if i use the tablet, the power level decreases while charging). I dont even think the issue is caused by a broken connector, because my Problem seems to be the same, and without connected charger, the tablet discharges much faster than normal. So its more like a fast uncharging problem caused by a defective part like the battery or a cable.
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
It's charging over ac ... its charging now, but only if I put it upside down and put a pen under the cable.... If I move the cable in the hole I hear little poping in there...
So this actually is possible 4 the devic to show me that its charging when it really isnt
Waranty? Unroot it and send it ? But there are some traces of fingers on a copper part, and the connector is a little bent :S will that void warranty?

Seems to me that your roommate should buy you a new Nexus 7, and he/she gets the old one (plus the headaches of dealing with returns/repairs).
good luck

bftb0 said:
Seems to me that your roommate should buy you a new Nexus 7, and he/she gets the old one (plus the headaches of dealing with returns/repairs).
good luck
Click to expand...
Click to collapse
I know -.-
But I just have that asshole in me to do it :S

Okay an update:
When using it in any position, with the cable connected:
Its discharging when screen on (or discharging slowly??? Idk) , and charging with screen off in the same position.
Im gonna charge it the whole night and I have a program that monitors chargin , so ill know how long was it charging...
Is there a setting that doesnt charge when screen on?
Or should I restore everything.. maybe an app is doing thes?
Edit:
Charging graph:
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Charging too slow?
Update:
Tonight I charged it again the same way....but it was charging slow now matter if I moved the cable or anything (with screen off)
Graph:

[Q] Battery indication weirdness

Help!!!!!!!!!
I charged my Nexus 7 2012 32gb yesterday morning, and took it off charge in the afternoon. I lightly used it in the evening, and it probably went to bed on ~60-70% charge. My alarm went off as usual at 07:00 this morning, and as far as I can remember, when it woke me up with that alarm the indicator in the top right was in roughly the right position for ~60-70% charge. Come back to it 5 minutes later after getting dressed, I tried to dab the power button to wake it up. That failed. I tried holding it down, trying to turn it on (it randomly turns itself off at times, for the record, so I suspected that). That also failed. I plugged it in to the charger, and it displayed a black screen with the occasional fuzzy rainbow line flickering on the screen.
In absolute panic, I googled this on my phone, and everybody recommended to take it back to PC World, apart from this one person, somewhere, suggesting to unplug it, leave it alone for a while, and try to turn it on then.
So I did that. I waited half an hour, and tried to turn it on. It successfully worked, apart from the fact that it suggested to me it had 0% charge, which is frankly impossible. Nonetheless I plugged it in, and the battery interface in Settings seems to be doing all kinds of weird things. For starters, I've charged it for half an hour, and it still is on 0%.
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The first photo shows it on its lock screen, plugged in. Note it asks for me to plug it in a charger, but in the top right it alleges that it is plugged in, due to the lightning bolt. Weird.
Take picture 2. 0% charge, same as what the notification drop down says. Then "Unknown". Wonderful. Normally,that should say charging, or not charging. But "Unknown"? That doesn't sound good.
Then picture 3. The battery usage graph. My understanding is that batteries discharge on a gradient, often a steep one, but not exactly the cliff drop here.
What on earth is going on, and do I really need to take it back to PC World, or can it be fixed?

benjimarshall said:
Help!!!!!!!!!
I charged my Nexus 7 2012 32gb yesterday morning, and took it off charge in the afternoon. I lightly used it in the evening, and it probably went to bed on ~60-70% charge. My alarm went off as usual at 07:00 this morning, and as far as I can remember, when it woke me up with that alarm the indicator in the top right was in roughly the right position for ~60-70% charge. Come back to it 5 minutes later after getting dressed, I tried to dab the power button to wake it up. That failed. I tried holding it down, trying to turn it on (it randomly turns itself off at times, for the record, so I suspected that). That also failed. I plugged it in to the charger, and it displayed a black screen with the occasional fuzzy rainbow line flickering on the screen.
In absolute panic, I googled this on my phone, and everybody recommended to take it back to PC World, apart from this one person, somewhere, suggesting to unplug it, leave it alone for a while, and try to turn it on then.
So I did that. I waited half an hour, and tried to turn it on. It successfully worked, apart from the fact that it suggested to me it had 0% charge, which is frankly impossible. Nonetheless I plugged it in, and the battery interface in Settings seems to be doing all kinds of weird things. For starters, I've charged it for half an hour, and it still is on 0%.
The first photo shows it on its lock screen, plugged in. Note it asks for me to plug it in a charger, but in the top right it alleges that it is plugged in, due to the lightning bolt. Weird.
Take picture 2. 0% charge, same as what the notification drop down says. Then "Unknown". Wonderful. Normally,that should say charging, or not charging. But "Unknown"? That doesn't sound good.
Then picture 3. The battery usage graph. My understanding is that batteries discharge on a gradient, often a steep one, but not exactly the cliff drop here.
What on earth is going on, and do I really need to take it back to PC World, or can it be fixed?
Click to expand...
Click to collapse
EDIT
I've got advice elsewhere and my fix was simply turning the device off, power cable out, then booting it to the Android Bootloader. From there I selected the shutdown option using the volume and power keys, and waited till I was sure it had shutdown. With the off device, I plugged in the power cable, and then turned it on normally. Problem solved.

Nexus 4 stock ROM died.No red led.new battery.gets hot.Still dead.thoughts?

Sorry if this is in the wrong place,
XDA has helped me out many times in the past, I've searched but found no concrete answers with this though:
I'm a truck driver and often charge my N4 on the go, probably doesn't help the battery, which for the last few months has begun to discharge in around 6 hours. I nearly bought a new battery but put it off then the phone died.
I plugged it into a in car (truck) charger on the 12v socket whilst at 5% and the charger started smoking. Pulled it out and found the phone was off and unresponsive (no surprise) with no red LEDs or otherwise.
Each time I did the following i also tried the volume down and power key or volume up and power key combinations with and without the charging cable plugged in and whilst holding down the buttons as well:
I plugged it in at home from a mains charger, nothing,overnight,nothing.
Also tried from the computer USB port,still nothing.
Bought a new battery, no change.
Bought a wireless charger in case the USB port fried: seemed to get warm but that could be the charger induction coils. Still no power on.
"Charged" the new battery externally with a spliced USB cable, nothing
"Charged" the new battery externally with a power supply at 0.5 ah and battery voltage went from 3.45 to 3.70 still no power on.
Repeated the above at 2.0 ah and put the battery voltage up to a maximum 4.5v for 10 mins - this time the backlight came on and would stay on until long press of the power button.
Then the phone got REALLY hot. I mean to the point of "something feels like its about to thermal runaway" hot. Pulled the battery and eventually it cooled down. If I plug the battery in now it gets hot on the WiFi/Bluetooth module first then spreads out over the board. As the power management chip is on the other side of the board to the WiFi module my question is: has this phone gone to hell? Is the chip overheating because its now fried or because its not getting the right power? Am I completely stupid and should get a phone that I can look after (Nokia 3210 anyone?!)
I had a N4 before this that packed up on me and I think the PMIC may have been the problem as well,only ever seen one post about it though that went unanswered.
Thanks for any suggestions, not trying to waste anyone's time or space.
Peace

UPDATE:
I'm also trying to resurrect an older N4 that had RLOD but when I tried to replace the battery I prised the battery connector off the pcb...ye. Should stick to not touching anything and not moving from one place. I soldered a pair of leads on to the contacts this evening to see if I get anything from it and I got a solid red led so thought I'd hook up more jumpers to the battery and go from there, in so doing I ripped the track off the pcb...no pad left to solder too and I cant find where the track runs to patch into it anywhere else. So I took the pcb off the phone I first posted to see what's underneath, and look what I found:
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And also:
Judging by how much black blood these chips have bled and the exit wound on the PMIC I think its fair to say I have two useless unrecoverable phones, no hope of data recovery via JTAG and no working phone either. Hope this helps someone looking to see why their phone gets so hot and won't turn on!

Nexus 4 Not powering on at all. Battery dead or phone dead?

Hello. Recently I decided to pick up my old Nexus 4 again and try seeing what happened to it.
I was using my Nexus 4 one day and dropped it from my bed, about a foot or so, and it just cut out.
I opened it up to find out that the battery cable had snapped because I had done an earlier battery repair, and forgot that I should have let the cable slack a little bit.
A few months later I get a replacement battery, and tried booting on the phone. It would get to the lock screen and say the phone is critically low, and shut off.
TWRP said the battery was at 80% charge, but the UI was flickering a bit. I asked the XDA Discord and was told it was a storage failure.
A few more months pass by to now, and I decide to try and revive my N4. I want to see if maybe the battery was seated wrong, it could've been.
I reseated the battery and tried plugging in the phone. Now, I get a solid red light, that changes to flashing, and then nothing. or a flashing light that stays flashing.
I have not gotten past this. Is the battery toast, or is the phone toast? Can I test the phone without buying another replacement battery? Thanks.
- Honkette

You can try getting a V+ measurement from the battery to get an idea of it's condition.
If it won't charge it's cable or connectors may be damaged.
Even if the battery failed it should take some charge. Obviously it's producing some voltage but maybe not enough to boot.
If the battery seems to take a charge allow it the charge overnight and see what it's voltage level is. If it still won't boot it's either the battery or hardware damage, but doing this would give you more information to make a call.

blackhawk said:
You can try getting a V+ measurement from the battery to get an idea of it's condition.
If it won't charge it's cable or connectors may be damaged.
Even if the battery failed it should take some charge. Obviously it's producing some voltage but maybe not enough to boot.
If the battery seems to take a charge allow it the charge overnight and see what it's voltage level is. If it still won't boot it's either the battery or hardware damage, but doing this would give you more information to make a call.
Click to expand...
Click to collapse
I've left it on the charger multiple times, and the phone seemingly doesn't do anything. never gets warm. I tighened down the connector screws and am using a cable I know works. I'll try to get a measurement from the battery.

Honkette1738 said:
I've left it on the charger multiple times, and the phone seemingly doesn't do anything. never gets warm. I tighened down the connector screws and am using a cable I know works. I'll try to get a measurement from the battery.
Click to expand...
Click to collapse
Check the other ribbon cables, port jack/pcb, mobo etc. carefully for damage or looseness.

UPDATE:
I was able to get the phone booting, but now when i try and start android it immediately says "Power Off" "Shutting Down"
now what? bad battery? it's plugged in, it shouldn't do that.

Honkette1738 said:
UPDATE:
I was able to get the phone booting, but now when i try and start android it immediately says "Power Off" "Shutting Down"
now what? bad battery? it's plugged in, it shouldn't do that.
Click to expand...
Click to collapse
May be the battery as it may draw quit a bit of current when booting.
More than the charger may be able to sink.

blackhawk said:
May be the battery as it may draw quit a bit of current when booting.
More than the charger may be able to sink.
Click to expand...
Click to collapse
Should i let it charge overnight and try again?

Honkette1738 said:
Should i let it charge overnight and try again?
Click to expand...
Click to collapse
cable>charger>port>battery
Yeah try that. Eliminate the cheap possibilities first. Seems like a battery or power issue.

well that might explain it
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Yay!

Phones working, forgot to say this on Monday. Although the battery percentage is fluctuating after charging overnight under LOS 15 and 17, no clue why.

New battery's dead. I'll try and get another.

I know this thread's old, but i'll just update my results with this:
She's cooked.
I got the new battery, worked fine for a bit, but the battery percentage was completely jank and would go up and down. Not too long later, it doesn't even boot. I'm guessing the EMMCs fried. If I find a smashed up Nexus 4 locally i'll for sure do a mobo swap since mine's in really good shape physically.